Let's Encryptの証明書をroute53使ってコマンド一発で自動取得

DNS-01方式

Please deploy a DNS TXT record under the name
_acme-challenge.sample.domain.com with the following value:
j7cahB2LuYhD0nu13_AqDut5R6W5GzLjqaQYrhJ6pew
Before continuing, verify the record is deployed.
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